Engine-valve.



l. C. WENDLHNG.

ENGINE VALVE. y APPLICATION FILED FEB; I7, 1915.

lll

xii

www.

niet

JOHN C. 'WENDLING, OF CLEVELAND, OHIO, ASSIGN QR OF ONE-HALF TOFREDERICK H. SCHLEGELLVIILCH, 0F ASHIABULA, OHIO.

ENGINE-VALVE.'

Specieation of Letters latent.V

Application led February 17, 1915. Serial No. 8,788. 4

To all whom it may concern.' e

Be it known that l, JOHN C. WENDLING, a citizen of the United States,residing at Cleveland, inthe county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Engine-Valves, vof whichthe @following is a speciication.

rlhis inventionrelates to improvements in valve mechanism for four cycleinternal combustion engines, wherein a box valve of simple constructionco-acts with the piston in timed relation to the inlet and exhaustports, whereby the admission of the live gas to the cylinder, and theexhaust of the burned gas therefrom are controlled by the same valve.

The objects of the invention are provision of a simple and durable valveconstruction that is highly eicient in operation, that minimizes theexpense of construction and repairs, that is readily adjustable to takeup the wear on the parts, to provide for thorough and effectivelubrication and to eliminatev in a great measure thev liability ofexpansion or warping of the operative parts through excessive heat.

The present invention provides for a box valve adapted to slide in avalve chamber transversely to adjacent inlet and'exhaust ports, the saidvalve being actuated by certain operativemeans co-acting intimedrelation with the piston for opening and closing the ports at the propertime through the cycles of operation ol the engine.

The invention is applicable to either single cylinder or multi-cylinderengines, and

' to avoid encumbering the.v specificatiorijtlie descriptionwill'beconinedto a single cylinder as the same would apply to all thecylinders.

ln the drawings forming a part of this specification, Figure 1 is avertical section through the center of the cylinder and the valvemechanism, showing the relative position of the valve, piston, and otheroperative parts atl the time of the explosion. Figs. 2, 3, and 4illustrate the relative` position of the valve to the intake and exhaustports in the exhaust, e intake, and compression strokes, respectively.Fig'. 5 is a View of the valve member detached and in direction of arrowinFig. 1., Fig. 6 is an enlarged transverse section of the valve memberon line 6 6 Fig. 5 and Fig. 7 is a similar section on line 7 7 Fig. 5.Fig.l 8 is a fragmlentary View of j an adjustable wearing p ate aSimilar characters of reference are used v.to designate'similar parts inthe drawings and description.

I am aware that a patent has been granted for a combustion engineembodying valve mechanism wherein two flat plates provided with ports,have a reciprocating movement on each other and transversely to theintake and exhaust portsfor opening and closing said ports in timedrelation to the cycles of operationl of the engine, and in an aplication tiled by me November 27, 1914, erial No. 874,137, and nowpending, l' have described substantially the same operation, but as faras I know there has not been used a reciprocating box-valve for thispurpose, and while `the broad' principles in regard to the admission andexhaust of the explosive material is the same, the particularconstruction of the valve is suchas to render the engine more efficient.

Referring to the drawings l represents a cylinder of an internalcombustion engine of the four cycle type equipped with the improvedvalve mechanism, 2 the piston, 3 the connecting rod, and l thecrank-shaft. The" exhaust port lEl and the intake port 1? are locatedadjacent and in alinement one above the other on the same side of thecylinder.

rarement nee. aa,- iaia.

- The ports just referred to open into a valve A member 8 is rectangularin shapel andfis provided with lateral ribs 8d, 8d. A Aflat cover plate9 of the same shape Iand surface area as the member 8 is connected withthe l said" member 8, preferably by means of dowel pins 10, `althoughscrews with counter-sunk heads or other means may be used, the dowelpins or screws entering the ribs 88, 8d. vThe combination of the memberjio A v byother well known means. .The member 11 necting rods 12 and 13.

8 and the cover plate 9 formsa box casing in which a valve member 11 isadapted to slide having a face'bearing on the members 8 and 9, and sideor edge bearings on the ribs 8d, 8d. The member A8`is provided. with twoslots 8a and 8F, and the cover plate'9l has slots `9a and'- 9b ofthesame area and in' thesame plane as the slots 8a and 8b. The

valve member 11 is provided with slots 11#y and 11'b Vof substantiallythe same area as the slots in the member 8 and in-the cover 9,' and y soarranged that in the sliding movement of 8 and 9, the said members 8and`9 have a reciprocating movement in the valve chamber separately butrelatively to that of the member 11 and in Yrelation to. y the intakeand exhaust ports, the box being actuated by means of a -connecting rodl'pivotally attached t'th e tongue 8c depending from the member 8 and.operated in the manner presently setr forth.4 l

The valve chamber is provided with a wearing plate 14 havingopenings'14a and 14blregisteringwith'the ports 1a and l". An

adjustable Wearingplate 15 is also provided on the opposite side of thevalve chamber and having openings 15a and 15h in line with the ports 5aand 511 but slightlyi` larger than said ports, to admit of adjustment ofsaid plate without covering the ports.

The member 11 and the box made up of the members 8 and 9 are operated intimed relation to the piston action by the coperating mechanism as.follows; An operative connection-m thls case-#of a two yto one ratio isprovided between the maincrankshaft 4 and a secondary crank-shaft 16.`Inthe engine illustrated Ain tion is through the medim of gears 41 and1 6, this gear'conystruction however is not ig. f1 this connecarbitrary,the same resultbein'g obtainable and the-'box' of the valve areeccentrically connected with the crank-'shaft v16.l by conrlhe distance'of ting the gas to the cylinder.

throw of the eccentric rod 12 v-is the same as that of the rod A13 andis governed by the predetermined relative positions of the ports 1-,`5aand the slots 8, 8b, 9a, 9b, 11a and 11b,

it is however, essential, if a two to one ratio l `In Fig. 1 the pistonisy at its extreme upward position, ready for the explosion, and theports 1a and 1b are closed. The explosion'of course forces the pistondownward, n the next one-half revolution of the main crank-shaft, or thefull stroke of the piston, the crank-shaft 16 makes a. one-quarterrevolution, owing to the two-to-one ratio of the gears 4a and 16, thisbrings the parts to the position shown in Fig. 2. During this onehalfcycle of the main crank-shaft the box of the valve travels faster thanvthe valve plate 11, carrying the slots in the box and in plate 11 to therelative position as shown, thereby opening the exhaust ports. The nexthalf cycle closes the exhaust and opens the intake ports, as shown inFig. 3, admit- The piston then assumes the position shown in Fig. 4,with the exhaust and intake ports closed, and during the next operationof the piston the compression takes place, andthe several cooperatingparts are brought to the first or explosion Yposition shown in Fig. 1.

Thorough lubrcationof the valve is provided through a pipe 17 connectedwith the upper part of the valve chamber 5 and with `a pump, not shown,but which may be located in any. suitable position and operativelyconnected'with the engine.

The vdistance. between the walls 5c and 5'1 ofthe valve chamber 5 isgreater at the top than at thelbottom of said chamber the wall y5c1beingat a sli ht angle to the walll 5c, and

the two "faces o ,l the bearing plate 15 are at the same angle to' eachother as the walls of the chamber. This provides a wear take-up, or anadjustment of the valve chamber relative to the valve box. Theadjustment of the plate 15 is regulated by the screws 18 threaded in thecap 19 and swiveled in the plate 15, the slots 15a and 15b `being ofgreaterarea thank the ports 5e and 5l admit of the raising or loweringof said plate for adjustment, without decreasing the area Vof saidports.

'The numerous advantages of this improved box valve construction willreadily be seen. It admits of a direct line longitudinel, reciprocatingmovement, of the ,member Licence 11 in the box member of the valve. Itprovides a double adjustment of the parts, namely, the adjustmentbetween the box member and the plate 11, and the adjustment between thebox member and the valve chamber. It also reduces to a minimum theliability of expansion of the parts by furnishing perfect means forlubrication to all bearing surfaces. It is easy to assemble, and readilyaccessible for repairs, and provides a most efficient. valve.

'It will be understood that the invention lies wholly in the valveconstruction and in its combination with the engine.

What I claim and desire to have secured to me by Letters Patent is.

l. In a valve for four cycle internal combustion engines, thecombination of a valve chamber provided with adjacent intake and exhaustports; a box valve member slidable in said chamber and provided with twoslots in each of the adjacent sides, a valve plate slidable within thebox member, saidplate beingprovided with two slots; and means foractuating the plate and box member reciprocably, separately butrelatively to bring the slots in said plate and in the box member intoand out of registration with each other and with the intake and exhaustports.

2.l In a four cycle internal combustion en- 'ne provided with adjacentinlet and exaust ports opening into a rectangular valve chamber, portsfrom said valve chamber opening into the cylinder in the same plane withthe rst mentioned ports, a box valve member slidable in said chambertransversely to the ports, said box being provided with two slots ineach ofr its adjacent sides, the slots in one side being in the sameplane with corresponding slots in the adjacent side a valve plateslidable between the two adjacent sides ofthe box member, said platebeing provided with two slots of the same area as the slots in the boxmember; and means for actuating the plate and box member reciprocably,separately but relatively to bring the slots in the valve plate and inthe'box member into vand out of registration with each other and withthe intake and exhaust ports. l

3. Ina four cycle internal combustion engine a cylinder with adjacentinlet and exhaust ports and a rectangularl chamber into which the portsopen, continuations of said ports on the opposite side of the chamber, abox valve member having a reciprocatory movement in thechambertransversely to the ports and having two slots in each of itsadjacent sides, a valve plate slidable within the box bearing on thesides thereof, said plate being provided with two slots spaceddiderently from those in the box member but ofthe same area, and meansfell' actuating the plate and box member reciprocably,

separately but relatively to bring the slots in the valve plate and inthe box member into and out of registration with .each other 'and withthe intake and exhaust ports in take and exhaust ports; 'a valve memberconsisting of a rectangular plate provided with lateral longitudinalribs, a rectangular cover plate attached to said ribs, thereby forming abox open at both ends and having two slots in each of the plates, arectangular plate slidable within the box and provided with slots of thesame area as the slots in the V1box member but differently spaced; meansfor actuating the plate reciprocably in the box; and means for actuatingthe box reciprocably in the valve chamber vin timed ,relation foropening and closing the intake and exhaust ports.

5. In a valve for four cycle internal combustion engines, thecombination of a rectangular valve chamber provided with intake andexhaust ports; an adjustable wearing plate in said valve chamber; avalve member consisting of a rectangular plate provided with laterallongitudinal ribs, a rectangular cover plate attached to said ribsthereby forming a box provided with two slots in each of the plates, arectangular plate slidable in the box and provided with slots of thesame area as the slots in the box member but differently spaced inlongitudinal relation; means for actuating the plate reciprocably in thebox; and means for actuating the box reciprocably in the valve chamberin timed relation for opening and closing the intake and exhaust ports.

6. A valve Ifor four cycle internal combustion engines consisting of arectangular box havingr two slots in each of two opposing membersthereof, a rectangular valve plate adapted to slide longitudinally insaid box and bearing on said opposing members and having slots thereinof the same area as the slots in the box but differently spaced inlongitudinal relation.

7. In a four cycle internal combustion engine the cylindervot1 which isprovided with adjacent intake and exhaust ports, the combination of arectangular valve chamber having ports in the same plane as the cylinderports; a rectangular box valve member slidable in 'said valve chambertransversely to the ports and provided with intake and exhaust ports ofthe same area as the chamber ports; an adjustable wearing plateinterposed between the box member and the wall of the valve chamber; avalve plate provided with slots of the same area as the slots in the boxmember but diderently loo v spaced, said VaVe plate reciprocably movtakeand exhaust ports in timed relation to able in ythe boxl member; meansfor actuatthe movements of the engine piston.

ing said box member; and 'means for actuat- JOHN C. WENDLING. ing the'valve plate in the box tol cause the Witnesses: slots in the plate 'andthe slots n the box to O. C. BILLMAN, regsterwth each otherand with then- L. F. GRIsWoLD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

' Washington1 D. C.

